Timeline: Marthe Marie Jensen: Our Family History

1846 - 1850 (3 years)

	Date	Event(s)
1	1845	4 Mar 1845—4 Mar 1849: James K. Polk U.S. Presidency
2	1846	25 Apr 1846—2 Feb 1848: Mexican-American War 10 Sep 1846—10 Sep 1846: The sewing machine is patented by Elias Howe
3	1847	1847—1847: US Mormons make Salt Lake City their centre Jan 1847—Jan 1847: An anesthetic used for the first time in England (James Simpson used ether to numb the pain of labour)
4	1848	1848—1848: First commercial production of chewing gum 24 Jan 1848—24 Jan 1848: Gold found at Sutter's Mill, California - starts the California gold rush 11 Jul 1848—11 Jul 1848: Waterloo railway station in London opens
5	1849	1849—1849: Florin (2 shilling coin) introduced as the first step to decimalisation - which finally occurred in 1971! 4 Mar 1849—9 Jul 1850: Zachary Taylor U.S. Presidency
6	1850	9 Jul 1850—4 Mar 1853: Millard Fillmore U.S. Presidency